The 21-year-old was riding the train between the Roosevelt and Harrison stops around 10:45 p.m. when he was approached by a male who made derogatory remarks and began stabbing him, according to Chicago police.
The man suffered stab wounds to the torso and elbow. He was taken to Northwestern Memorial Hospital where he was listed in fair condition, police said.
The suspect fled the scene after the attack.
No one is in custody as Area Three detectives investigate.